\documentclass[UTF8]{ctexart}
\usepackage{amsmath}
\usepackage{amsxtra}
\title{Latex常见符号对照}
\author{fosonmeng}
\begin{document}
	\maketitle
	\tableofcontents
	\section{希伯来和希腊字母}
	\subsection{Hebrew}
	\begin{tabular}{lc}
		\hline
		Type               & Typeset  \\ \hline
		$\backslash$aleph  & $\aleph$ \\ \hline
		$\backslash$beth   &          \\ \hline
		$\backslash$daleth &          \\ \hline
		$\backslash$gimel  &          \\ \hline
	\end{tabular}

	\subsection{Greek}
	\subsubsection{小写}
	\begin{tabular}{lclclc}
		\hline
		Type                   &    Typeset    & Type                 &  Typeset  & Type                 &   Typeset   \\ \hline
		$\backslash$alpha      &   $\alpha$    & $\backslash$iota     &  $\iota$  & $\backslash$sigma    &  $\sigma$   \\
		$\backslash$beta       &    $\beta$    & $\backslash$kappa    & $\kappa$  & $\backslash$tau      &   $\tau$    \\
		$\backslash$gamma      &   $\gamma$    & $\backslash$lambda   & $\lambda$ & $\backslash$upsilon  & $\upsilon$  \\
		$\backslash$delta      &   $\delta$    & $\backslash$mu       &   $\mu$   & $\backslash$phi      &   $\phi$    \\
		$\backslash$epsilon    &  $\epsilon$   & $\backslash$nu       &   $\nu$   & $\backslash$chi      &   $\chi$    \\
		$\backslash$zeta       &    $\zeta$    & $\backslash$xi       &   $\xi$   & $\backslash$psi      &   $\psi$    \\
		$\backslash$eta        &    $\eta$     & $\backslash$pi       &   $\pi$   & $\backslash$omega    &  $\omega$   \\
		$\backslash$theta      &   $\theta$    & $\backslash$rho      &  $\rho$   &  \\
		$\backslash$varepsilon & $\varepsilon$ & $\backslash$varpi    & $\varpi$  & $\backslash$varsigma & $\varsigma$ \\
		$\backslash$vartheta   &  $\vartheta$  & $\backslash$varrho   & $\varrho$ & $\backslash$varphi   &  $\varphi$  \\
		$\backslash$digamma    &               & $\backslash$varkappa &  \\ \hline
	\end{tabular}

	\subsubsection{大写}
	\begin{tabular}{lclclc}
		\hline
		Type                  &  Typeset  & Type                   &  Typeset   & Type                 & Typeset  \\ \hline
		$\backslash$Gamma     & $\Gamma$  & $\backslash$Xi         &   $\Xi$    & $\backslash$Phi      &  $\Phi$  \\
		$\backslash$Delta     & $\Delta$  & $\backslash$Pi         &   $\Pi$    & $\backslash$Psi      &  $\Psi$  \\
		$\backslash$Theta     & $\Theta$  & $\backslash$Sigma      &  $\Sigma$  & $\backslash$Omega    & $\Omega$ \\
		$\backslash$Lambda    & $\Lambda$ & $\backslash$Upsilon    & $\Upsilon$ &                      &  \\
		$\backslash$varGamma  &           & $\backslash$varXi      &            & $\backslash$varPhi   &          \\
		$\backslash$varDelta  &           & $\backslash$varPi      &            & $\backslash$varPsi   &          \\
		$\backslash$varTheta  &           & $\backslash$varSigma   &            & $\backslash$varOmega &          \\
		$\backslash$varLambda &           & $\backslash$varUpsilon &            &                      &  \\ \hline
	\end{tabular}
	
	\section{关系符和操作符}
	\subsection{二元关系符}
	\begin{tabular}{lclc}
		\hline
		Type                              &   Typset    & Type                               &    Typeset    \\ \hline
		                                  &     $<$     &                                    &      $>$      \\
		                                  &     $=$     & $\backslash$colon                  &   $\colon$    \\
		$\backslash$in                    &    $\in$    & $\backslash$ni or $\backslash$owns &     $\ni$     \\
		$\backslash$leq or $\backslash$le &    $\le$    & $\backslash$geq or $\backslash$ge  &     $\ge$     \\
		$\backslash$ll                    &    $\ll$    & $\backslash$gg                     &     $\gg$     \\
		$\backslash$prec                  &   $\prec$   & $\backslash$succ                   &    $\succ$    \\
		$\backslash$sim                   &   $\sim$    & $\backslash$approx                 &   $\approx$   \\
		$\backslash$simeq                 &  $\simeq$   & $\backslash$cong                   &    $\cong$    \\
		$\backslash$equiv                 &  $\equiv$   & $\backslash$dotq                   &   $\doteq$    \\
		$\backslash$subset                &  $\subset$  & $\backslash$supset                 &   $\supset$   \\
		$\backslash$subseteq              & $\subseteq$ & $\backslash$supseteq               &  $\supseteq$  \\
		$\backslash$sqsubseteq            &             & $\backslash$sqsupseteq             & $\sqsupseteq$ \\
		$\backslash$smile                 &  $\smile$   & $\backslash$frown                  &   $\frown$    \\
		$\backslash$perp                  &   $\perp$   & $\backslash$models                 &   $\models$   \\
		$\backslash$mid                   &   $\mid$    & $\backslash$parallel               &  $\parallel$  \\
		$\backslash$vdash                 &  $\vdash$   & $\backslash$dashv                  &   $\dashv$    \\
		$\backslash$propto                &  $\propto$  & $\backslash$asymp                  &   $\asymp$    \\
		$\backslash$bowtie                &             &  \\
		$\backslash$sqsubset              &             & $\backslash$sqsupset               &               \\
		$\backslash$Join                  &             &  \\ \hline
	\end{tabular}

	\subsubsection{更多二元关系}
	\begin{tabular}{lclc}
		\hline
		Type                        & Typeset & Type                         & Typeset \\ \hline
		$\backslash$leqq            &         & $\backslash$geqq             &         \\
		$\backslash$leqslant        &         & $\backslash$geqslant         &         \\
		$\backslash$eqslantless     &         & $\backslash$eqslantgtr       &         \\
		$\backslash$lesssim         &         & $\backslash$gtrsim           &         \\
		$\backslash$lessapprox      &         & $\backslash$gtrapprox        &         \\
		$\backslash$approxeq        &         &  \\
		$\backslash$lessdot         &         & $\backslash$gtrdot           &         \\
		$\backslash$lll             &         & $\backslash$ggg              &         \\
		$\backslash$lessgtr         &         & $\backslash$gtrless          &         \\
		$\backslash$lesseqgtr       &         & $\backslash$gtreqless        &         \\
		$\backslash$lesseqqgtr      &         & $\backslash$gtreqqless       &         \\
		$\backslash$doteqdot        &         & $\backslash$eqcirc           &         \\
		$\backslash$circeq          &         & $\backslash$triangleq        &         \\
		$\backslash$risingdotseq    &         & $\backslash$fallingdotseq    &         \\
		$\backslash$backsim         &         & $\backslash$thicksim         &         \\
		$\backslash$backsimeq       &         & $\backslash$thickapprox      &         \\
		$\backslash$preccurlyeq     &         & $\backslash$succcurlyeq      &         \\
		$\backslash$curlyeqprec     &         & $\backslash$curlyeqsucc      &         \\
		$\backslash$precsim         &         & $\backslash$succsim          &         \\
		$\backslash$precapprox      &         & $\backslash$succapprox       &         \\
		$\backslash$subseteqq       &         & $\backslash$supseteqq        &         \\
		$\backslash$Subset          &         & $\backslash$Supset           &         \\
		$\backslash$vartriangleleft &         & $\backslash$vartriangleright &         \\
		$\backslash$trianglelefteq  &         & $\backslash$trianglerighteq  &         \\
		$\backslash$vDash           &         & $\backslash$Vdash            &         \\
		$\backslash$VvDash          &         &  \\
		$\backslash$smallsmile      &         & $\backslash$smallfrown       &         \\
		$\backslash$shortmid        &         & $\backslash$shortparallel    &         \\
		$\backslash$bumpeq          &         & $\backslash$Bumpeq           &         \\
		$\backslash$between         &         & $\backslash$pitchfork        &         \\
		$\backslash$varpropto       &         & $\backslash$backepsilon      &         \\
		$\backslash$therefore       &         & $\backslash$because          &         \\ \hline
	\end{tabular}

	\subsubsection{否定的二元关系符}
	\begin{tabular}{lclc}
		\hline
		Type                              & Typeset & Type                         & Typeset  \\ \hline
		$\backslash$neq or $\backslash$ne &  $\ne$  & $\backslash$notin            & $\notin$ \\
		$\backslash$nless                 &         & $\backslash$ngtr             &          \\
		$\backslash$nleq                  &         & $\backslash$ngeq             &          \\
		$\backslash$nleqslant             &         & $\backslash$ngeqslant        &          \\
		$\backslash$nleqq                 &         & $\backslash$ngeqq            &          \\
		$\backslash$lneq                  &         & $\backslash$gneq             &          \\
		$\backslash$lneqq                 &         & $\backslash$gneqq            &          \\
		$\backslash$lvertneqq             &         & $\backslash$gvertneqq        &          \\
		$\backslash$lnsim                 &         & $\backslash$gnsim            &          \\
		$\backslash$lnapprox              &         & $\backslash$gnapprox         &          \\
		$\backslash$nprec                 &         & $\backslash$nsucceq          &          \\
		$\backslash$precneq               &         & $\backslash$succneq          &          \\
		$\backslash$precnsim              &         & $\backslash$succnsim         &          \\
		$\backslash$precnapprox           &         & $\backslash$succnapprox      &          \\
		$\backslash$nsim                  &         & $\backslash$ncong            &          \\
		$\backslash$nshortmid             &         & $\backslash$nshortparallel   &          \\
		$\backslash$nmid                  &         & $\backslash$nparallel        &          \\
		$\backslash$nvdash                &         & $\backslash$nvDash           &          \\
		$\backslash$nVdash                &         & $\backslash$nVDash           &          \\
		$\backslash$ntriangleleft         &         & $\backslash$ntriangleright   &          \\
		$\backslash$ntrianglelefteq       &         & $\backslash$ntrianglerighteq &          \\
		$\backslash$nsubseteq             &         & $\backslash$nsupseteq        &          \\
		$\backslash$nsubseteqq            &         & $\backslash$nsupseteqq       &          \\
		$\backslash$subsetneq             &         & $\backslash$supsetneq        &          \\
		$\backslash$varsubsetneq          &         & $\backslash$varsupsetneq     &          \\
		$\backslash$subsetneqq            &         & $\backslash$supsetneqq       &          \\
		$\backslash$varsubsetneqq         &         & $\backslash$varsupsetneqq    &          \\ \hline
	\end{tabular}

	\subsection{二元运算符}
	\begin{tabular}{lclc}
		\hline
		Type                                     &     Typeset      & Type                                     &      Typeset       \\ \hline
		                                         &       $+$        &                                          &        $-$         \\
		$\backslash$pm                           &      $\pm$       & $\backslash$mp                           &       $\mp$        \\
		$\backslash$times                        &     $\times$     & $\backslash$cdot                         &      $\cdot$       \\
		$\backslash$circ                         &     $\circ$      & $\backslash$bigcirc                      &     $\bigcirc$     \\
		$\backslash$div                          &      $\div$      & $\backslash$bmod                         &                    \\
		$\backslash$cap                          &      $\cap$      & $\backslash$cup                          &       $\cup$       \\
		$\backslash$sqcap                        &                  & $\backslash$sqcup                        &      $\sqcup$      \\
		$\backslash$wedge or $\backslash$land    &     $\wedge$     & $\backslash$vee or $\backslash$lor       &       $\vee$       \\
		$\backslash$triangleleft                 & $\triangleleft$  & $\backslash$triangleright                &  $\triangleright$  \\
		$\backslash$bigtriangleup                & $\bigtriangleup$ & $\backslash$bigtriangledown              & $\bigtriangledown$ \\
		$\backslash$oplus                        &     $\oplus$     & $\backslash$ominus                       &     $\ominus$      \\
		$\backslash$otimes                       &    $\otimes$     & $\backslash$oslash                       &     $\oslash$      \\
		$\backslash$odot                         &     $\odot$      & $\backslash$bullet                       &     $\bullet$      \\
		$\backslash$dagger                       &    $\dagger$     & $\backslash$ddagger                      &     $\ddagger$     \\
		$\backslash$setminus                     &   $\setminus$    & $\backslash$smallsetminus                &                    \\
		$\backslash$wr                           &      $\wr$       & $\backslash$amalg                        &      $\amalg$      \\
		$\backslash$ast                          &      $\ast$      & $\backslash$start                        &      $\star$       \\
		$\backslash$diamod                       &    $\diamond$    &  \\
		$\backslash$lhd                          &                  & $\backslash$rhd                          &                    \\
		$\backslash$unlhd                        &                  & $\backslash$unrhd                        &                    \\
		$\backslash$dotplus                      &                  & $\backslash$centerdot                    &                    \\
		$\backslash$ltimes                       &                  & $\backslash$rtimes                       &                    \\
		$\backslash$leftthreetimes               &                  & $\backslash$rightthreetimes              &                    \\
		$\backslash$circledash                   &                  & $\backslash$uplus                        &                    \\
		$\backslash$barwedge                     &                  & $\backslash$doublebarwedge               &                    \\
		$\backslash$curlywedge                   &                  & $\backslash$curlyvee                     &                    \\
		$\backslash$veebar                       &                  & $\backslash$intercal                     &                    \\
		$\backslash$doublecap or $\backslash$Cap &                  & $\backslash$doublecup or $\backslash$Cup &                    \\
		$\backslash$circledast                   &                  & $\backslash$circledcirc                  &                    \\
		$\backslash$boxminus                     &                  & $\backslash$boxtimes                     &                    \\
		$\backslash$boxdot                       &                  & $\backslash$boxplus                      &                    \\
		$\backslash$divideontimes                &                  & $\backslash$vartriangle                  &                    \\
		$\backslash$And                          &                  &  \\ \hline
	\end{tabular}

	\subsection{箭头符号}
	\begin{tabular}{lclc}
		\hline
		Type                          &      Typeset       & Type                                     &        Typeset        \\ \hline
		$\backslash$leftarrow         &    $\leftarrow$    & $\backslash$rightarrow or $\backslash$to &         $\to$         \\
		$\backslash$longleftarrow     &  $\longleftarrow$  & $\backslash$longrightarrow               &   $\longrightarrow$   \\
		$\backslash$Leftarrow         &    $\Leftarrow$    & $\backslash$Rightarrow                   &     $\Rightarrow$     \\
		$\backslash$Longleftarrow     &  $\Longleftarrow$  & $\backslash$Longrightarrow               &   $\Longrightarrow$   \\
		$\backslash$leftrightarrow    & $\leftrightarrow$  & $\backslash$longleftrightarrow           & $\longleftrightarrow$ \\
		$\backslash$Leftrightarrow    & $\Leftrightarrow$  & $\backslash$Longleftrightarrow           & $\Longleftrightarrow$ \\
		$\backslash$uparrow           &     $\uparrow$     & $\backslash$downarrow                    &     $\downarrow$      \\
		$\backslash$Uparrow           &     $\Uparrow$     & $\backslash$Downarrow                    &     $\Downarrow$      \\
		$\backslash$updownarrow       &   $\updownarrow$   & $\backslash$Updownarrow                  &    $\Updownarrow$     \\
		$\backslash$nearrow           &     $\nearrow$     & $\backslash$searrow                      &      $\searrow$       \\
		$\backslash$swarrow           &     $\swarrow$     & $\backslash$nwarrow                      &      $\nwarrow$       \\
		$\backslash$iff               &       $\iff$       & $\backslash$mapstochar                   &                       \\
		$\backslash$mapsto            &     $\mapsto$      & $\backslash$longmapsto                   &     $\longmapsto$     \\
		$\backslash$hookleftarrow     &  $\hookleftarrow$  & $\backslash$hookrightarrow               &   $\hookrightarrow$   \\
		$\backslash$leftharpoonup     &  $\leftharpoonup$  & $\backslash$rightharpoonup               &   $\rightharpoonup$   \\
		$\backslash$leftharpoondown   & $\leftharpoondown$ & $\backslash$rightharpoondown             &  $\rightharpoondown$  \\
		$\backslash$leadsto           &                    &                                          &  \\
		$\backslash$leftleftarrows    &                    & $\backslash$rightrightarrows             &                       \\
		$\backslash$leftrightarrows   &                    & $\backslash$rightleftarrows              &                       \\
		$\backslash$Lleftarrow        &                    & $\backslash$Rrightarrow                  &                       \\
		$\backslash$twoheadleftarrow  &                    & $\backslash$twoheadrightarrow            &                       \\
		$\backslash$leftarrowtail     &                    & $\backslash$rightarrowtail               &                       \\
		$\backslash$looparrowleft     &                    & $\backslash$looparrowright               &                       \\
		$\backslash$upuparrows        &                    & $\backslash$downdownarrows               &                       \\
		$\backslash$upharpoonleft     &                    & $\backslash$upharpoonright               &                       \\
		$\backslash$downharpoonleft   &                    & $\backslash$downharpoonright             &                       \\
		$\backslash$multimap          &                    &                                          &  \\
		$\backslash$nleftarrow        &                    & $\backslash$nrightarrow                  &                       \\
		$\backslash$nLeftarrow        &                    & $\backslash$nRightarrow                  &                       \\
		$\backslash$nleftrightarrow   &                    & $\backslash$nLeftrightarrow              &                       \\
		$\backslash$dashleftarrow     &                    & $\backslash$dashrightarrow               &                       \\
		$\backslash$curvearrowleft    &                    & $\backslash$curvearrowright              &                       \\
		$\backslash$circlearrowleft   &                    & $\backslash$circlearrowright             &                       \\
		$\backslash$leftrightharpoons &                    & $\backslash$rightleftharpoons            &                       \\
		$\backslash$Lsh               &                    & $\backslash$Rsh                          &                       \\ \hline
	\end{tabular}

	\subsection{其他符号}
	\begin{tabular}{lclc}
		\hline
		Type                      &   Typeset    & Type                                &    Typeset     \\ \hline
		$\backslash$hbar          &   $\hbar$    & $\backslash$ell                     &     $\ell$     \\
		$\backslash$imath         &   $\imath$   & $\backslash$jmath                   &    $\jmath$    \\
		$\backslash$wp            &    $\wp$     & $\backslash$partial                 &   $\partial$   \\
		$\backslash$Im            &    $\Im$     & $\backslash$Re                      &     $\Re$      \\
		$\backslash$infty         &   $\infty$   & $\backslash$prime                   &    $\prime$    \\
		$\backslash$emptyset      & $\emptyset$  & $\backslash$varnothing              &                \\
		$\backslash$forall        &  $\forall$   & $\backslash$exists                  &   $\exists$    \\
		$\backslash$smallint      &              & $\backslash$triangle                &  $\triangle$   \\
		$\backslash$top           &    $\top$    & $\backslash$bot                     &     $\bot$     \\
		$\backslash$P             &              & $\backslash$S                       &                \\
		$\backslash$dag           &    $\dag$    & $\backslash$ddag                    &    $\ddag$     \\
		$\backslash$flat          &   $\flat$    & $\backslash$natural                 &   $\natural$   \\
		$\backslash$sharp         &   $\sharp$   & $\backslash$angle                   &    $\angle$    \\
		$\backslash$clubsuit      & $\clubsuit$  & $\backslash$diamondsuit             & $\diamondsuit$ \\
		$\backslash$heartsuit     & $\heartsuit$ & $\backslash$spadesuit               &  $\spadesuit$  \\
		$\backslash$surd          &   $\surd$    & $\backslash$nabla                   &    $\nabla$    \\
		$\backslash$pounds        &   $\pounds$  & $\backslash$neg or $\backslash$lnot &     $\neg$     \\
		$\backslash$Box           &              & $\backslash$Diamond                 &                \\
		$\backslash$mho           &              &  \\
		$\backslash$hslash        &              & $\backslash$complement              &                \\
		$\backslash$backprime     &              & $\backslash$nexists                 &                \\
		$\backslash$Bbbk          &              &  \\
		$\backslash$diagup        &              & $\backslash$diagdown                &                \\
		$\backslash$blacktriangle &              & $\backslash$blacktriangledown       &                \\
		$\backslash$triangledown  &              & $\backslash$eth                     &                \\
		$\backslash$square        &              & $\backslash$blacksquare             &                \\
		$\backslash$lozenge       &              & $\backslash$blacklozenge            &                \\
		$\backslash$measuredangle &              & $\backslash$sphericalangle          &                \\
		$\backslash$circledS      &              & $\backslash$bigstart                &                \\
		$\backslash$Finv          &              & $\backslash$Game                    &                \\ \hline
	\end{tabular}

	\subsection{操作符}
	\subsubsection{no limits}
	\begin{tabular}{llllllll}
		\hline
		Type               & Typeset   & Type             & Typeset & Type            & Typeset & Type             & Typeset \\ \hline
		$\backslash$arccos & $\arccos$ & $\backslash$cot  & $\cot$  & $\backslash$hom & $\hom$  & $\backslash$sin  & $\sin$  \\
		$\backslash$arcsin & $\arcsin$ & $\backslash$coth & $\coth$ & $\backslash$ker & $\ker$  & $\backslash$sinh & $\sinh$ \\
		$\backslash$arctan & $\arctan$ & $\backslash$csc  & $\csc$  & $\backslash$lg  & $\lg$   & $\backslash$tan  & $\tan$  \\
		$\backslash$arg    & $\arg$    & $\backslash$deg  & $\deg$  & $\backslash$ln  & $\ln$   & $\backslash$tanh & $\tanh$ \\
		$\backslash$cos    & $\cos$    & $\backslash$dim  & $\dim$  & $\backslash$log & $\log$  &                  &  \\
		$\backslash$cosh   & $\cosh$   & $\backslash$exp  & $\exp$  & $\backslash$sec & $\sec$  &                  &  \\ \hline
	\end{tabular}

	\subsubsection{with limits}
	\begin{tabular}{llll}
		\hline
		Type                  & Typeset   & Type                   & Typset    \\ \hline
		$\backslash$det       & $\det$    & $\backslash$limsup     & $\limsup$ \\
		$\backslash$gcd       & $\gcd$    & $\backslash$max        & $\max$    \\
		$\backslash$inf       & $\inf$    & $\backslash$min        & $\min$    \\
		$\backslash$lim       & $\lim$    & $\backslash$Pr         & $\Pr$     \\
		$\backslash$limif     & $\liminf$ & $\backslash$sup        & $\sup$    \\
		$\backslash$injlim    &           & $\backslash$projlim    &           \\
		$\backslash$varliminf &           & $\backslash$varlimsup  &           \\
		$\backslash$varinjlim &           & $\backslash$varprojlim &           \\ \hline
	\end{tabular}

	\subsection{组合操作符}
	\begin{tabular}{lcc}
		\hline
		Type                        &         Inline         & Displayed \\ \hline
		\verb|\int_{a}^{b}|         &     $\int_{a}^{b}$     &           \\
		\verb|\oint_{a}^{b}|        &    $\oint_{a}^{b}$     &           \\
		\verb|\iint_{a}^{b}|        &    $\iint_{a}^{b}$     &           \\
		\verb|\iiint_{a}^{b}|       &    $\iiint_{a}^{b}$    &           \\
		\verb|\iiiint_{a}^{b}|      &   $\iiiint_{a}^{b}$    &           \\
		\verb|\idotsint_{a}^{b}|    &  $\idotsint_{a}^{b}$   &           \\
		\verb|\prod_{i=1}^{n}|      &   $\prod_{i=1}^{n}$    &           \\
		\verb|\coprod_{i=1}^{n}|    &  $\coprod_{i=1}^{n}$   &           \\
		\verb|\bigcap_{i=1}^{n}|    &  $\bigcap_{i=1}^{n}$   &           \\
		\verb|\bigcup_{i=1}^{n}|    &  $\bigcup_{i=1}^{n}$   &           \\
		\verb|\bigwedge_{i=1}^{n}|  & $\bigwedge_{i=1}^{n}$  &           \\
		\verb|\bigvee_{i=1}^{n}|    &  $\bigvee_{i=1}^{n}$   &           \\
		\verb|\bigsqcup_{i=1}^{n}|  & $\bigsqcup_{i=1}^{n}$  &           \\
		\verb|\biguplus_{i=1}^{n}|  & $\biguplus_{i=1}^{n}$  &           \\
		\verb|\bigotimes_{i=1}^{n}| & $\bigotimes_{i=1}^{n}$ &           \\
		\verb|\bigoplus_{i=1}^{n}|  & $\bigoplus_{i=1}^{n}$  &           \\
		\verb|\bigodot_{i=1}^{n}|   &  $\bigodot_{i=1}^{n}$  &           \\
		\verb|\sum_{i=1}^{n}|       &    $\sum_{i=1}^{n}$    &           \\ \hline
	\end{tabular}

	\section{数学强调和字形}
	\subsection{Accents}
	\begin{tabular}{lclc}
		\hline
		                   \multicolumn{4}{c}{amsxtra}                     \\ \hline
		Type                 &     Typeset     & Type            & Typeset \\ \hline
		\verb|\acute{a}|     &   $\acute{a}$   &                 &         \\
		\verb|\bar{a}|       &    $\bar{a}$    &                 &         \\
		\verb|\breve{a}|     &   $\breve{a}$   & \verb|\spbreve| &         \\
		\verb|\check{a}|     &   $\check{a}$   & \verb|\spcheck| &         \\
		\verb|\dot{a}|       &    $\dot{a}$    & \verb|\spdot|   &         \\
		\verb|\ddot{a}|      &   $\ddot{a}$    & \verb|\spddot|  &         \\
		\verb|\dddot{a}|     &   $\dddot{a}$   & \verb|\spdddot| &         \\
		\verb|\ddddot{a}|    &  $\ddddot{a}$   &                 &         \\
		\verb|\grave{a}|     &   $\grave{a}$   &                 &         \\
		\verb|\hat{a}|       &    $\hat{a}$    &                 &         \\
		\verb|\widehat{a}|   &  $\widehat{a}$  & \verb|\sphat|   &         \\
		\verb|\mathring{a}|  & $\mathring{a}$  &                 &         \\
		\verb|\tilde{a}|     &   $\tilde{a}$   &                 &         \\
		\verb|\widetilde{a}| & $\widetilde{a}$ & \verb|\sptilde| &         \\
		\verb|\vec{a}|       &    $\vec{a}$    &                 &         \\ \hline
	\end{tabular}

	\subsection{字体}
	\begin{tabular}{lc}
		\hline
		Type                       &        Typeset        \\ \hline
		\LaTeXe                    &                       \\
		\verb|\mathbf{A}|          &     $\mathbf{A}$      \\
		\verb|\mathcal{A}|         &     $\mathcal{A}$     \\
		\verb|\mathit{A}|          &     $\mathit{A}$      \\
		\verb|\mathnormal{A}|      &   $\mathnormal{A}$    \\
		\verb|\mathrm{A}|          &     $\mathrm{A}$      \\
		\verb|\mathsf{A}|          &     $\mathsf{A}$      \\
		\verb|\mathtt{A}|          &     $\mathtt{A}$      \\
		\verb|\boldsymbol{\alpha}| & $\boldsymbol{\alpha}$ \\
		\verb|\mathbb{A}|          &                       \\
		\verb|\mathfrak{A}|        &                       \\
		\verb|\mathscr{A}|         &                       \\ \hline
	\end{tabular}

	\section{间距}
	\begin{tabular}{lcll}
		\hline
		Name                         & Width & Short               & Long               \\ \hline
		1 mu$\left(math unit\right)$ &       & \verb|\mspace{1mu}| &                    \\
		thinspace                    &       & $\backslash$,       & \verb|\thinspace|  \\
		medspace                     &       & $\backslash$:       & \verb|\medspace|   \\
		thickspace                   &       & $\backslash$;       & \verb|\thickspace| \\
		interword space              &       &  \\
		1em                          &       &                     & \verb|\quad|       \\
		2em                          &       &                     & \verb|\qquad|      \\ \hline
	\end{tabular}

	\section{大小}
	\begin{tabular}{lc}
		\hline
		Command                                       &       \LaTeXe Sample       \\ \hline
		$\backslash$Tiny                              &                            \\
		$\backslash$tiny                              &     \tiny{sample text}     \\
		$\backslash$SMALL or $\backslash$scriptsize   &  \scriptsize{sample text}  \\
		$\backslash$Small or $\backslash$footnotesize & \footnotesize{sample text} \\
		$\backslash$small                             &    \small{sample text}     \\
		$\backslash$normalsize                        &  \normalsize{sample text}  \\
		$\backslash$large                             &    \large{sample text}     \\
		$\backslash$Large                             &    \Large{sample text}     \\
		$\backslash$LARGE                             &    \LARGE{sample text}     \\
		$\backslash$huge                              &     \huge{sample text}     \\
		$\backslash$Huge                              &     \Huge{sample text}     \\ \hline
	\end{tabular}
\end{document}